| 引用本文: | 杜盈，张劲东，蒋宜林, 尹明月. 基于FSK-PSK复合调制的正交波形设计[J]. 雷达科学与技术, 2022, 20(5): 539-548.[点击复制] |
| DU Ying, ZHANG Jindong, JIANG Yilin, YIN Mingyue. Orthogonal Waveform Design Based on FSK-PSK Composite Modulation[J]. Radar Science and Technology, 2022, 20(5): 539-548.[点击复制] |
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| 摘要: |
| 干扰机通过复制和转发部分目标信号产生欺骗干扰，导致雷达跟踪到的是虚假目标而无法锁定真实目标。为对抗欺骗干扰，设计了脉内相位编码(Phase Shift Keying, PSK)、脉间跳频编码(Frequency Shift Keying, FSK)的FSK-PSK正交波形，用0-1离散变量表示跳频和相位进行0-1整数规划，构造增广拉格朗日函数，采用拟牛顿法求解，同时优化跳频和相位。仿真结果表明，FSK-PSK复合调制信号相对于简单的PSK信号具有更好的抗干扰性能，本文设计的FSK-PSK复合调制信号具有良好的正交性，保证各子脉冲的自相关函数具有低副瓣的同时，子脉冲之间的互相关水平也得到抑制。 |
| 关键词: 欺骗干扰 FSK-PSK复合调制 正交波形 0-1整数规划 拟牛顿法 |
| DOI：DOI:10.3969/j.issn.1672-2337.2022.05.010 |
| 分类号:TN911.7 |
| 基金项目:国家自然科学基金（No.62171220）; 航空科学基金（No.20172052015， 20182007001）; 上海航天基金（No.SAST2018-077） |
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| Orthogonal Waveform Design Based on FSK-PSK Composite Modulation |
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DU Ying, ZHANG Jindong, JIANG Yilin, YIN Mingyue
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School of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, China
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| Abstract: |
| Jammers generate deceptive jamming by partially copying and retransmitting target signals, which leads to the radar tracking false targets and unable to lock the real targets. For combatting deceptive jamming, FSK-PSK orthogonal waveforms with intra-pulse phase shift keying (PSK) encoding and inter-pulse frequency shift keying (FSK) encoding are designed. The 0-1 discrete variables are used to represent the frequency hopping and phase to perform 0-1 integer programming, the augmented Lagrange function is constructed, and the problem is solved by the quasi-Newton method, therefore frequency hopping and phase can be optimized si-multaneously. The simulation results show that the FSK-PSK composite modulated signal has better anti-jamming performance compared with the simple PSK signal. The FSK-PSK composite modulated signal designed in this paper has good orthogonality, which ensures that the autocorrelation function of each sub-pulse has low sidelobe, and the cross-correlation level between sub-pulses is also suppressed. |
| Key words: deceptive jamming FSK-PSK composite modulation orthogonal waveform 0-1 integer programming quasi-Newton method |
